Airplane seat back



FIG. 1 is a perspective view of a seat back taken from the front, topand left, showing the rod length indicator fully closed;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevation view thereof; and,

FIG. 5 is a top plan view thereof.

The broken line showing of an airplane seat back is included for thepurpose of illustrating environmental structure and forms no part of theclaimed design.

I claim the ornamental design and appearance of an airplane seat back,substantially as shown and described.